Differences among living things that enable them to live in different kinds of environments and adopt different lifestyles.

Lamarack Theory

Lineage of organisms changed over generations as offspring inherited structures from parents that had become larger and more highly developed.

Darwin's Theory of Evolution

1. Reproductive rates of all organisms are high that populations would become enormous if death rates were not equally as high.
2. With each type of organism, there are differences among organisms.
3. Offspring are similar to parents because they inherit parents' features.

Natural selection

Differential survival and reproductive success of individuals.

Chemical evolution

4 billion years ago, when random inorganic interactions produced molecules that had a prperty of acting as templates to form similar molecules.

Three major properties of cells

1. Cells Capture energy & replicate.
2. Cells are the unit on which all of life is built.
3. Cells only come form other cells.

Cells

Interacting systems of molecules enclosed in a compartment.

Prokaryotic cells

Simple cells had no internal membrane-bound compartements.

Photosynthesis

Ability to use the energy of sunlight to power metabolism.

Eukaryotic cells

Cells with complex internal compartments.

Sex

Exchanges of genteic material and reproduction.

Why does sex increase the rate of evolution?

Because an organism that exchnages genetic info with another individual produces offspring that is more genetically variable.

Diversification is driven in part by variatons/changes in the physical environment.

Homeostasis

Maintanence of a relatively stable environment.

Theory of Evolution by Natural Selection - Darwin's Theory

1. The reproductive rates of all organisms are sufficiently high that populations would be enormous if mortality rates did not balance reproductive rates.
2. Variations among individuals influence how well those individuals survive.
3. Offspring are similar to their parents because they inherit their parents features.